Slieve Bawn mountain info maps weather Slieve Bawn is the 12685th highest peak in the British Isles and the 1178th tallest in Ireland Also known as Sliabh Bana Elevation 262.0 m (860 ft) Prominence 205.0 m (673 ft) Category Marilyn Hill / mountain range North Midlands Nearest town OS map sheets OSi50: 040 (Galway, Longford, Roscommon, Westmeath)